// Copyright (c) 2012 Andrei Rinea
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.

using System;
using System.Threading;

namespace BenchmarkNet
{
    internal class ParallelBenchmark<TState> where TState : class
    {
        private readonly ManualResetEvent _waitHandle;

        public BenchmarkParams<TState> BenchmarkParams { get; private set; }

        public TState State { get; private set; }
        public WaitHandle WaitHandle { get { return _waitHandle; } }
        public BenchmarkResult Result { get; private set; }

        public ParallelBenchmark(BenchmarkParams<TState> benchmarkParams, TState state)
        {
            if (benchmarkParams == null) throw new ArgumentNullException("benchmarkParams");

            BenchmarkParams = benchmarkParams;
            State = state;
            _waitHandle = new ManualResetEvent(false);
        }

        public static void DoWork(object obj)
        {
            var @this = (ParallelBenchmark<TState>)obj;
            try { @this.Result = Benchmark.Sequential(@this.BenchmarkParams, @this.State); }
            finally { @this._waitHandle.Set(); }
        }
    }
}